Graft copolymers of polyarylene ethers, polyamides and copolymers which contain cyclic, .alpha.,.beta.-unsaturated dicarboxylic anhydrides as polymerized units

- BASF Aktiengesellschaft

Graft copolymers are obtainable by reactingA) polyarylene ethers,B) polyamides andC) copolymers which contain cyclic, .alpha.,.beta.-unsaturated dicarboxylic anhydridesand are used for the preparation of thermoplastic molding materials or as compatibilizers for polymer blends based on polyarylene ethers and polyamides.

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Claims

1. A graft copolymer obtained by reacting

A) from 5 to 85% by weight of at least one polyarylene ether having at least 30% of reactive terminal groups which are capable of reacting with the functional groups of component C,
B) from 5 to 85% by weight of at least one thermoplastic polyamide and
C) from 10 to 90% by weight of at least one copolymer which is composed of
c.sub.1) at least one aromatic vinyl compound,
c.sub.2) at least one cyclic,.alpha.,.beta.-unsaturated dicarboxylic anhydride,
c.sub.3) at least one cyclic,.alpha.,.beta.-unsaturated dicarboximide,
c.sub.4) if required, at least one further monomer copolymerizable with c.sub.1 to c.sub.3,

2. A graft copolymer as claimed in claim 1, obtained by reacting component A in an amount of from 10 to 75% by weight, component B in an amount of from 10 to 75% by weight and component C in an amount of from 15 to 80% by weight.

3. A graft copolymer as claimed in claim 1, starting from polyarylene ethers A), which have hydroxyl, amino or epoxy groups as reactive terminal groups.

4. A graft copolymer as claimed in claim 1, in which the polyarylene ethers contain repeating units of the formula I ##STR3## where t and q independently of one another are each 0, 1, 2 or 3, T, Q and Z are identical or different and, independently of one another may each be a chemical bond or a member selected from the group consisting of from --O--, --S--, --SO.sub.2 --, >S.dbd.O, >C.dbd.O,

--N.dbd.N--, --R.sup.a C.dbd.CR.sup.b -- and --CR.sup.c R.sup.d --, with the proviso that at least one of the groups T, Q and Z is --SO.sub.2 -- or C.dbd.O,
R.sup.a and R.sup.b are each hydrogen or C.sub.1 -C.sub.10 -alkyl, R.sup.c and R.sup.d are each hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkoxy or C.sub.6 -C.sub.18 -aryl, where the abovementioned groups may each be substituted by fluorine and/or chlorine, and
Ar and Ar.sup.1 are each C.sub.6 -C.sub.18 -arylene, where these groups may furthermore have substituents selected from C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.18 -aryl, C.sub.1 -C.sub.10 -alkoxy and halogen.

5. A graft copolymer as claimed in claim 4, in which the polyarylene ethers A) contain

a.sub.1) from 3 to 97 mol % of repeating units I.sub.1 ##STR4## a.sub.2) 3 to 97 mol % of repeating units I.sub.2 ##STR5##

6. A graft copolymer as claimed in claim 1, which contains, as component B a polyamide which is composed of b.sub.1) from 20 to 90% by weight of units derived from terephthalic acid and hexamethylenediamine,

b.sub.2) from 0 to 50% by weight of units derived from.epsilon.-caprolactam,
b.sub.3) from 0 to 80% by weight of units derived from adipic acid and hexamethylenediamine
b.sub.4) from 0 to 40% by weight of units derived from further polyamide-forming monomers,

7. A graft copolymer as claimed in claim 1, which contains, as component B, an amorphous polyamide which is composed of

b.sub.5) from 60 to 100% by weight of units derived from isophthalic acid and hexamethylenediamine and
b.sub.6) from 0 to 40% by weight of units derived from terephthalic acid and hexamethylenediamine.

8. A graft copolymer as claimed in claim 1, in which the copolymers C are composed of

c.sub.1) from 20 to 90, mol % of aromatic vinyl compounds,
c.sub.2) from 1 to 50, mol % of cyclic,.alpha.,.beta.-unsaturated dicarboxylic anhydrides,
c.sub.3) from 9 to 50, mol % of cyclic,.alpha.,.beta.-unsaturated dicarboximides and
c.sub.4) from 0 to 30, mol % of further units derived from monomers capable of free radical polymerization.

9. A graft copolymer as claimed in claim 1, in which the copolymer C is composed of units which are derived from

c.sub.1) styrene,
c.sub.2) maleic anhydride and
c.sub.3) N-phenylmaleimide.

10. In a method for formulating polymer blends based on polyarylene ethers and polyamides, the improvement comprising adding to said blends a graft copolymer as defined in claim 1.

11. A thermoplastic molding material comprising

(I) at least one graft copolymer as claimed in claim 1,
(II) from 0 to 60% by weight of fibrous or particulate fillers,
(III) from 0 to 45% by weight of rubber impact modifiers and
(IV) from 0 to 40% by weight of at least one additive selected from the group consisting of flameproof agents, pigments, stabilizers, antistatic agents and processing assistants, the amounts by weight of components (II) to (IV) being based on the total weight of the molding material.

12. A thermoplastic molding material as claimed in 11, comprising

(I) from 1 to 30% by weight of at least one graft copolymer as claimed in claim 1,
(II) from 0 to 60% by weight of fibrous or particulate fillers,
(III) from 0 to 45% by weight of rubber impact modifiers,
(IV) from 0 to 40% by weight of at least one additive selected from the group consisting of flameproofing agents, pigments, stabilizers, antistatic agents and processing assistants,
(V) from 1 to 98% by weight of at least one polyarylene ether without reactive terminal groups and
(VI) from 1 to 98% by weight of at least one thermoplastic polyamide, the amounts by weight of components (I) to (VI) being based on the total weight of the molding material.
Referenced Cited
U.S. Patent Documents
5457169 October 10, 1995 Weber et al.
5639833 June 17, 1997 Weber et al.
Patent History
Patent number: 5907010
Type: Grant
Filed: Mar 18, 1997
Date of Patent: May 25, 1999
Assignee: BASF Aktiengesellschaft (Ludwigshafen)
Inventors: Martin Weber (Neustadt), Norbert Guntherberg (Speyer)
Primary Examiner: Mark L. Warzel
Law Firm: Keil & Weinkauf
Application Number: 8/820,279
Classifications
Current U.S. Class: Solid Graft Or Solid Graft-type Copolymer With Other Solid Polymer, Sicp, Or Spfi (524/504); Solid Block Or Solid Block-type Copolymer With Other Solid Polymer, Sicp Or Spfi (524/505); With Polycarboxylic Acid Or Derivative And A Polyamine, Or With Nitrogen Containing Carboxylic Acid Or Derivative Reactant At Least One Of Which Is Saturated Or With Solid Polymer Thereof (524/514); Solid Polymer Derived From Nitrogen Heterocycle Monomer (524/516); Ethylenic Monomer Contains A Nitrogen Heterocycle (524/530); Ethylenic Monomer Contains A Chalcogen Heterocycle (524/531); Solid Polymer Or Sicp Derived From At Least One Nitrogen-containing Carboxylic Acid Or Derivative Reactant Or From A Carboxylic Acid Or Derivative And A Polyamine (524/538); From Nitrogen-containing Monomer Other Than Acrylonitrile Or Methacrylonitrile (524/555); With Solid Polymer Derived From At Least One Nitrogen-containing Reactant Wherein At Least One Of The Reactants Forming The Solid Polymer Is Saturated; Or With Spfi Wherein At Least One Of The Necessary Ingredients Contains A Nitrogen Atom Or With A Reaction Product Thereof; Or With Nitrogen-containing Sicp (525/66); Mixture Contains Solid Polymer Derived From Reactant Containing Nitrogen Heterocycle (525/73); Mixture Contains Solid Polymer Derived From Reactant Containing Oxygen Heterocycle (525/74); Mixture Contains Solid Polymer Derived From Reactant Containing Nitrogen Other Than From (meth)acrylonitrile (525/77); Solid Polymer Derived From A Lactam; From An Amino Carboxylic Acid Or Derivative; From A Polyamine And A Polycarboxylic Acid Or Derivative (525/92B); Mixed With Carboxylic Acid Or Derivative Reactant Or Polymer Derived Therefrom (525/397); Solid Polymer Derived From An Amino Carboxylic Acid Or Derivative; From A Polyamine And A Polycarboxylic Acid Or Derivative; From At Least One Lactam; Or From A Polyamine Salt Of A Polycarboxylic Acid (525/420); Mixed With Polycarboxylic Acid Or Derivative And Polyhydroxy Reactant Or Polymer Therefrom (525/425); Solid Polymer Derived From Phenolic Reactant (525/534)
International Classification: C08L 3904; C08L 7100; C08L 7700;